morno.
In 2006 a BA B777-200 (garden variety with 94,200 kg fuel tanks) with Capt Rod Mitchell in command and 19 other crew flew nonstop from Brussels to Melbourne in 18hr 45mn. The flight was for Tony Blair and about 90 hangars on to attend the Commonwealth Games. Imagine the endurance for the 200ER with 137,460 kg fuel tanks and the 200LR with 145,538 kg fuel tanks (assuming same payload)